在具有多个 if/Case 条件的 sqlite 更新触发器中答案

【问题标题】：in sqlite update trigger with multiple if/Case Conditions在具有多个 if/Case 条件的 sqlite 更新触发器中
【发布时间】：2018-01-10 13:01:22
【问题描述】：

在触发器中如何获得多个条件检查

CREATE TRIGGER record_big_order AFTER INSERT ON orders 
BEGIN 
IF new.value > 1000000 THEN 
  INSERT INTO big_orders (customer_name, salesman_id, value,Mark) 
                  VALUES (new.customer_name, new.salesman_id, new.value,'1') 
END IF; 
IF new.value > 2000000 THEN 
  INSERT INTO big_orders (customer_name, salesman_id, value,Mark) 
                  VALUES (new.customer_name, new.salesman_id, new.value,'2') 
END IF; 
IF new.value > 3000000 THEN 
  INSERT INTO big_orders (customer_name, salesman_id, value,Mark) 
                  VALUES (new.customer_name, new.salesman_id, new.value,'3')
END IF; 
END;

【问题讨论】：

标签： sqlite if-statement triggers switch-statement case

【解决方案1】：

你可以试试下面的 INSERT 语句 -

INSERT INTO big_orders (customer_name, salesman_id, value,Mark) 
VALUES (new.customer_name, new.salesman_id, new.value,
        CASE WHEN new.value > 3000000 THEN '3'
             WHEN new.value > 2000000 THEN '2'
             WHEN new.value > 1000000 THEN '1' END)

【讨论】：